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Question

A body covers one fourth of the distance with speed v, the next one fourth of distance with speed 3v4 and the remaining distance with speed 3v2. The average speed is

एक पिण्ड प्रथम एक चौथाई दूरी v चाल से, अगली एक चौथाई दूरी 3v4 चाल से तथा शेष दूरी 3v2 चाल से तय करता है। औसत चाल है

A
14v13
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B
18v21
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C
12v11
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D
19v17
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Solution

The correct option is C 12v11
Solution

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